NASA’s Dawn spacecraft has snapped even clearer views of Ceres, but its surface just keeps getting curiouser and curiouser. A strange bright spot on the dwarf planet now appears to have a companion spot shining right next to it.

Bright spots are often thought to have icy origins, though a Dawn project member has said that the readings from Ceres don’t appear consistent with pure water ice. However, the mission’s lead scientist has now floated another possible explanation.